One that springs to mind.
Years ago I used to be a kitchen porter. As I was ambling into the kitchen replacing the clean stuff one of the chefs was having a discussion with the matrodee about the bar. I had to run off laughing when he asked "How big are your kegs?".

Another time the head chef was trying to dish out a bollocking to the chefs for the state they left the place last night. It started with "Guess what I came into this morning" There were 3 replies simultaneously:
"A sock?"
"A butthole?"
"A tramps hair?"
(Thu 12th Jun 2008, 13:27, More)

My mate reckoned his room was haunted.
Apparently everytime he had a wank he could hear a clap sound after it. We all told him this was bollocks but i'll never forget him angrily shouting "nah it's real, you don't believe me? COME ROUND AND HAVE A WANK IN THERE THEN"
(Tue 8th Jul 2008, 17:50, More)